Holden V8 4.2 / 5.0 L cast cylinder head rocker covers, These covers are nice & tall so there is plenty of room for roller rockers. Cast in funnel style oil breathers so no nasty screws, rivits or tin plates to contend with. The covers also have a cast in drip lip that fits inside the cylinder head casting to help stop the gasket slipping in & help stop oil leaks. Available in through bolt hold downs with the end bolts eliminated. These covers are a wrinkle black power coated finish & come supplied with a PCV & oil cap breather grommet. The covers are 115mm tall outside & 90 mm tall on the inside. Std Factory tin covers are 77mm outside & 76 inside.